Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Why do you find that most of the buildings are deprived of the 13th floor?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Solve the puzzle by telling what does below picture means.

Replace the question mark with the correct number below.

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.